下面是工作代码与原型:

String.prototype.replaceAll = function(find, replace) {
    var str = this;
    return str.replace(new RegExp(find.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1"), 'g'), replace);
};

使用常规表达式:

str.replace(/abc/g, '');

对抗全球常规表达:

anotherString = someString.replace(/cat/g, 'dog');

下面是基于接受答案的序列原型功能:

String.prototype.replaceAll = function(find, replace) {
    var str = this;
    return str.replace(new RegExp(find, 'g'), replace);
};

如果你的发现包含特殊的字符,那么你需要逃避它们:

String.prototype.replaceAll = function(find, replace) {
    var str = this;
    return str.replace(new RegExp(find.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&'), 'g'), replace);
};

Fiddle: http://jsfiddle.net/cdbzL/

试试这:

String.prototype.replaceAll = function (sfind, sreplace) {
    var str = this;

    while (str.indexOf(sfind) > -1) {
        str = str.replace(sfind, sreplace);
    }

    return str;
};

var str = "ff ff f f a de def";
str = str.replace(/f/g,'');
alert(str);

HTTP://jsfiddle.net/ANHR9/